TY - RPRT TI - Quality of surface waters of the United States, 1969, Part 3, Ohio River basin AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1974 DO - 10.3133/wsp2143 UR - https://pubs.usgs.gov/publication/wsp2143 ID - wsp2143 ER -